The paper presents a method of value customization based on the modelling and design methods of Service Engineering. This aims at increasing satisfaction levels of customers. The method remarkably addresses what customized means depending on the customers desire, while many theories and practices on customization have dealt only with how. Some design operations of the method are explained using an actual redesign of an existing industrial service in a hotel industry. This will be effective for designing products or services whose value varies from one customer to another. Furthermore, the value is expected to be a more important concept to be designed according to recent development of products and services for market individualisation servicification in industries.